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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 19:29:48
WDS:
HU972
WDS ID/Discoverer
P:
150.810
Orbital period (years)
a:
0.321
Semi-major axis (arcseconds)
i:
47.3
Inclination (degrees)
Ω:
189.1
Longitude of ascending node (degrees)
T:
1963.650
Epoch of periastron passage (year)
e:
0.633
Eccentricity
ω:
276.1
Longitude of periastron (degrees)
Start-Year:
1950.0
Year
End-Year:
2100.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
215104.93+665014.7
Epoch-2000 right ascension and declination
WDS-ID:
21511+6650
WDS designation
Discoverer Code:
HU972
Discover designation and components
ADS number:
15398
Aitken Double Star catalog
HD number:
208074
HD catalog number
Hipparcos number:
107855
Hipparcos catalog number
V1:
9.09
Magnitude of the primary
V2:
9.54
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
2008
Date of last observation
Orbit grade:
4
Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:
n
Flags
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Click to expand/collapse ephemeris:
Year Sep[“] PA[°]
---------------------------------------------
2025.0 0.347 273.5
-------------------------
1950.0 0.235 1.4
1951.0 0.225 3.9
1952.0 0.216 6.5
1953.0 0.205 9.4
1954.0 0.194 12.7
1955.0 0.182 16.4
1956.0 0.169 20.6
1957.0 0.155 25.5
1958.0 0.140 31.5
1959.0 0.125 38.8
1960.0 0.110 48.2
1961.0 0.097 60.4
1962.0 0.086 76.0
1963.0 0.080 95.0
1964.0 0.082 114.9
1965.0 0.089 132.9
1966.0 0.101 147.2
1967.0 0.115 158.4
1968.0 0.129 167.1
1969.0 0.143 174.1
1970.0 0.156 179.8
1971.0 0.169 184.7
1972.0 0.180 189.0
1973.0 0.190 192.8
1974.0 0.200 196.1
1975.0 0.209 199.2
1976.0 0.217 202.1
1977.0 0.225 204.7
1978.0 0.232 207.2
1979.0 0.238 209.5
1980.0 0.244 211.8
1981.0 0.250 213.9
1982.0 0.255 215.9
1983.0 0.260 217.9
1984.0 0.265 219.7
1985.0 0.269 221.6
1986.0 0.273 223.3
1987.0 0.277 225.0
1988.0 0.280 226.7
1989.0 0.284 228.3
1990.0 0.287 229.9
1991.0 0.290 231.4
1992.0 0.293 233.0
1993.0 0.296 234.4
1994.0 0.299 235.9
1995.0 0.301 237.3
1996.0 0.304 238.7
1997.0 0.306 240.1
1998.0 0.308 241.5
1999.0 0.311 242.9
2000.0 0.313 244.2
2001.0 0.315 245.5
2002.0 0.317 246.8
2003.0 0.318 248.1
2004.0 0.320 249.3
2005.0 0.322 250.6
2006.0 0.324 251.8
2007.0 0.325 253.1
2008.0 0.327 254.3
2009.0 0.328 255.5
2010.0 0.330 256.7
2011.0 0.331 257.8
2012.0 0.333 259.0
2013.0 0.334 260.2
2014.0 0.335 261.3
2015.0 0.337 262.5
2016.0 0.338 263.6
2017.0 0.339 264.7
2018.0 0.340 265.9
2019.0 0.341 267.0
2020.0 0.342 268.1
2021.0 0.343 269.2
2022.0 0.345 270.3
2023.0 0.346 271.3
2024.0 0.347 272.4
2025.0 0.347 273.5
2026.0 0.348 274.6
2027.0 0.349 275.6
2028.0 0.350 276.7
2029.0 0.351 277.7
2030.0 0.352 278.8
2031.0 0.353 279.8
2032.0 0.353 280.9
2033.0 0.354 281.9
2034.0 0.355 282.9
2035.0 0.355 283.9
2036.0 0.356 285.0
2037.0 0.357 286.0
2038.0 0.357 287.0
2039.0 0.358 288.0
2040.0 0.358 289.0
2041.0 0.359 290.0
2042.0 0.359 291.0
2043.0 0.360 292.0
2044.0 0.360 293.0
2045.0 0.360 294.0
2046.0 0.361 295.0
2047.0 0.361 296.0
2048.0 0.361 297.0
2049.0 0.361 298.0
2050.0 0.362 299.0
2051.0 0.362 299.9
2052.0 0.362 300.9
2053.0 0.362 301.9
2054.0 0.362 302.9
2055.0 0.362 303.9
2056.0 0.361 304.9
2057.0 0.361 305.9
2058.0 0.361 306.9
2059.0 0.361 307.9
2060.0 0.360 308.8
2061.0 0.360 309.8
2062.0 0.359 310.8
2063.0 0.359 311.8
2064.0 0.358 312.8
2065.0 0.358 313.9
2066.0 0.357 314.9
2067.0 0.356 315.9
2068.0 0.355 316.9
2069.0 0.354 317.9
2070.0 0.353 319.0
2071.0 0.352 320.0
2072.0 0.350 321.1
2073.0 0.349 322.1
2074.0 0.347 323.2
2075.0 0.346 324.3
2076.0 0.344 325.3
2077.0 0.342 326.4
2078.0 0.340 327.5
2079.0 0.338 328.7
2080.0 0.336 329.8
2081.0 0.333 331.0
2082.0 0.331 332.1
2083.0 0.328 333.3
2084.0 0.325 334.5
2085.0 0.322 335.8
2086.0 0.319 337.0
2087.0 0.315 338.3
2088.0 0.311 339.6
2089.0 0.307 341.0
2090.0 0.303 342.4
2091.0 0.298 343.8
2092.0 0.294 345.3
2093.0 0.289 346.8
2094.0 0.283 348.4
2095.0 0.277 350.0
2096.0 0.271 351.7
2097.0 0.264 353.5
2098.0 0.257 355.4
2099.0 0.250 357.4
This result is provided without warranty. For all terms, see the Full Disclaimer .
Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 4.0 .
The Double Star Calculator - Orbital Elements makes use of the Washington Double Star Sixth Catalog of Orbits of Visual Binary Stars, maintained at the U.S. Naval Observatory .
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